(unstack b11 b4)
(stack b11 b7)
(unstack b4 b10)
(putdown b4)
(unstack b10 b3)
(stack b10 b4)
(unstack b3 b9)
(putdown b3)
(unstack b5 b8)
(stack b5 b3)
(unstack b9 b1)
(stack b9 b11)
(unstack b1 b12)
(stack b1 b10)
(unstack b12 b2)
(stack b12 b5)
(pickup b6)
(stack b6 b2)
(unstack b1 b10)
(stack b1 b6)
(unstack b10 b4)
(stack b10 b1)
(unstack b9 b11)
(stack b9 b10)
(pickup b8)
(stack b8 b9)
(unstack b12 b5)
(stack b12 b8)
(unstack b11 b7)
(stack b11 b12)
; cost = 30 (unit cost)
